Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name. Since January 1, 2025 a certificate expires five years after filing, and certificates filed before then expire on December 31, 2029. Filing in the wrong town or not at all carries a $500 penalty.
Checked Oct 21, 2026 against the agency’s page.
Step 1 of 6: Set up the business
1Set up the business
2Register for tax
3Approve the space
4Get the permits for your kind of business
5Alcohol permits
6Before the first hire
Issued by The town clerk of the town where the business operates (C.G.S. 35-1).
Sources and dates
C.G.S. 35-1 as amended by Public Act 24-111; town clerk trade name pages (Guilford, Manchester, Middlebury, Burlington). Checked against the agency’s page on the date shown; cities add their own fees.
Questions about opening here.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
Yes. Needed whenever a sole proprietor, LLC or corporation trades under any name other than the owner’s legal name or the entity’s registered name.
The town clerk of the town where the business operates (C.G.S. 35-1).
Step 1 of 6, set up the business. It is the first step.
Who needs a trade name certificate (DBA) in Connecticut? | DoorWorthy
